# K101220: Explorer 4D Treatment Planning System

- Pathway: 510(k) (Traditional)
- Applicant: American Radiosurgery, Inc.
- Decided: Nov 5, 2010 after 186 days
- Product code: MUJ (System, Planning, Radiation Therapy Treatment)
- Device class: 2
- Regulation: 21 CFR 892.5050
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K093588 (2010). 1 ancestor in all.
2 later devices descend from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K093588: Explorer 4D Treatment Planning System, American Radiosurgery, Inc. (2010) Summary page 2.

## Most influential descendants
- K193459: Panther Stereotactic (2020), 1 descendant of its own
- K231825: Panther TPS (2023), 0 descendants of its own

## Indications for use
The Explorer 4D Treatment Planning System software is intended for use in preparing treatment plans for patients who have intracranial diseases where neurological radio surgery has been prescribed. The software is used to electronically import CT and MR images to determine the precise location of the target, to define and visualize treatment beam locations, and to visualize dose to the target and other structures.

Source page: https://510kreport.com/device/K101220
Methodology: https://510kreport.com/methodology